| US 7,514,668 B2 | ||
| Optical navigation device that utilizes a vertical cavity surface emitting laser (VCSEL) configured to emit visible coherent light | ||
| Kwang Beng Ooi, Penang (Malaysia); Li Chong Tai, Penang (Malaysia); and Shan Chong Tan, Penang (Malaysia) | ||
| Assigned to Avago Technologies ECBU IP (Singapore) Pte. Ltd., Singapore (Singapore) | ||
| Filed on Dec. 19, 2006, as Appl. No. 11/612,610. | ||
| Prior Publication US 2008/0142691 A1, Jun. 19, 2008 | ||
| Int. Cl. G09G 5/08 (2006.01) | ||
| U.S. Cl. 250—221 [345/156] | 19 Claims |
| 1. An optical navigation device for tracking movement relative to a work surface, the optical navigation device comprising:
a housing;
a vertical cavity surface emitting laser (VCSEL) mounted within the housing and configured to generate a coherent light in
the visible light spectrum;
a VCSEL repositioning mechanism that is configured to position the VCSEL in a navigation position and a pointing position;
a navigation sensor mounted within the housing; and
optics mounted within the housing;
wherein the VCSEL, the navigation sensor, and the optics are configured, in the navigation position, within the housing such
that the coherent light emitted from the VCSEL is incident on the work surface and such that a reflected portion of the coherent
light is detected by the navigation sensor; and
wherein the navigation sensor captures image frames in response to the reflected portion of the coherent light and generates
relative movement information in response to the captured image frames.
|